Dig out Ken Burns' 10 parter about the war. It's excellent. Regularly on PBS, which I believe has a streaming service. I watch it every time it comes on.
I remember them helicoptering the last troops/civilians out of Hanoi(?) in ‘75, the Amerricans leaving Karbul was a reminder of that panic. Trumpf won’t have that problem when he taco’s because missiles don’t need evacuation